From: Ahmad Fatoum <[email protected]> Unlike the PWN duty cycle, we already have a parameter for the brightness, so we can't retroactively redefine it to be in terms of percentages.
By setting the scale, we allow users to enter percentages between 0% and 100% over the same parameter as well. Signed-off-by: Ahmad Fatoum <[email protected]> --- drivers/video/backlight.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/video/backlight.c b/drivers/video/backlight.c index 51d245a80fdb..6d8146ee5aa0 100644 --- a/drivers/video/backlight.c +++ b/drivers/video/backlight.c @@ -69,6 +69,7 @@ static int backlight_brightness_set(struct param_d *p, void *priv) int backlight_register(struct backlight_device *bl) { + struct param_d *param; int ret; dev_set_name(&bl->dev, "backlight"); @@ -78,8 +79,10 @@ int backlight_register(struct backlight_device *bl) if (ret) return ret; - dev_add_param_uint32(&bl->dev, "brightness", backlight_brightness_set, - NULL, &bl->brightness, "%u", bl); + param = dev_add_param_uint32(&bl->dev, "brightness", backlight_brightness_set, + NULL, &bl->brightness, "%u", bl); + param_int_set_scale(param, bl->brightness_max); + dev_add_param_uint32(&bl->dev, "slew_time_ms", NULL, NULL, &bl->slew_time_ms, "%u", NULL); -- 2.47.3
